Buggy code:
public abstract class AbstractImageBuilder implements ICompilerRequestor , ICompilationUnitLocator { protected JavaBuilder javaBuilder ; protected State newState ; protected NameEnvironment nameEnvironment ; protected ClasspathMultiDirectory [ ] sourceLocations ; protected BuildNotifier notifier ; protected Compiler compiler ; protected WorkQueue workQueue ; protected ArrayList problemSourceFiles ; protected boolean compiledAllAtOnce ; private boolean inCompiler ; protected boolean keepStoringProblemMarkers ; protected SimpleSet filesWithAnnotations = null ; public static int MAX_AT_ONCE = 2000 ; public static final String [ ] JAVA_PROBLEM_MARKER_ATTRIBUTE_NAMES = new String [ ] { IMarker . MESSAGE , IMarker . SEVERITY , IJavaModelMarker . ID , IMarker . CHAR_START , IMarker . CHAR_END , IMarker . LINE_NUMBER , IJavaModelMarker . ARGUMENTS , IJavaModelMarker . CATEGORY_ID } ; public static final String [ ] JAVA_TASK_MARKER_ATTRIBUTE_NAMES = new String [ ] { IMarker . MESSAGE , IMarker . PRIORITY , IJavaModelMarker . ID , IMarker . CHAR_START , IMarker . CHAR_END , IMarker . LINE_NUMBER , IMarker . USER_EDITABLE , IMarker . SOURCE_ID } ; public static final Integer S_ERROR = new Integer ( IMarker . SEVERITY_ERROR ) ; public static final Integer S_WARNING = new Integer ( IMarker . SEVERITY_WARNING ) ; public static final Integer P_HIGH = new Integer ( IMarker . PRIORITY_HIGH ) ; public static final Integer P_NORMAL = new Integer ( IMarker . PRIORITY_NORMAL ) ; public static final Integer P_LOW = new Integer ( IMarker . PRIORITY_LOW ) ; protected AbstractImageBuilder ( JavaBuilder javaBuilder , boolean buildStarting , State newState ) { } public void acceptResult ( CompilationResult result ) { } protected void acceptSecondaryType ( ClassFile classFile ) { } protected void addAllSourceFiles ( final ArrayList sourceFiles ) throws CoreException { } protected void cleanUp ( ) { } protected void compile ( SourceFile [ ] units ) { } protected void compile ( SourceFile [ ] units , SourceFile [ ] additionalUnits , boolean compilingFirstGroup ) { } protected void createProblemFor ( IResource resource , IMember javaElement , String message , String problemSeverity ) { } protected void deleteGeneratedFiles ( IFile [ ] deletedGeneratedFiles ) { } protected SourceFile findSourceFile ( IFile file , boolean mustExist ) { } protected void finishedWith ( String sourceLocator , CompilationResult result , char [ ] mainTypeName , ArrayList definedTypeNames , ArrayList duplicateTypeNames ) { } protected IContainer createFolder ( IPath packagePath , IContainer outputFolder ) throws CoreException { } public ICompilationUnit fromIFile ( IFile file ) { } protected void initializeAnnotationProcessorManager ( Compiler newCompiler ) { } protected RuntimeException internalException ( CoreException t ) { } protected boolean isExcludedFromProject ( IPath childPath ) throws JavaModelException { } protected Compiler newCompiler ( ) { } protected BuildContext [ ] notifyParticipants ( SourceFile [ ] unitsAboutToCompile ) { } protected abstract void processAnnotationResults ( CompilationParticipantResult [ ] results ) { } protected void processAnnotations ( BuildContext [ ] results ) { } protected void recordParticipantResult ( CompilationParticipantResult result ) { CategorizedProblem [ ] problems = result . problems ; if ( ( problems != null ) && ( ( problems . length ) > 0 ) ) { this . notifier . updateProblemCounts ( problems ) ; try { storeProblemsFor ( result . sourceFile , problems ) ; } catch ( CoreException e ) { <START_BUG> e . printStackTrace ( ) ; <END_BUG> } } String [ ] dependencies = result . dependencies ; if ( dependencies != null ) { ReferenceCollection refs = ( ( ReferenceCollection ) ( this . newState . references . get ( result . sourceFile . typeLocator ( ) ) ) ) ; if ( refs != null ) refs . addDependencies ( dependencies ) ; } } protected void storeProblemsFor ( SourceFile sourceFile , CategorizedProblem [ ] problems ) throws CoreException { } protected void storeTasksFor ( SourceFile sourceFile , CategorizedProblem [ ] tasks ) throws CoreException { } protected void updateProblemsFor ( SourceFile sourceFile , CompilationResult result ) throws CoreException { } protected void updateTasksFor ( SourceFile sourceFile , CompilationResult result ) throws CoreException { } protected char [ ] writeClassFile ( ClassFile classFile , SourceFile compilationUnit , boolean isTopLevelType ) throws CoreException { } protected void writeClassFileBytes ( byte [ ] bytes , IFile file , String qualifiedFileName , boolean isTopLevelType , SourceFile compilationUnit ) throws CoreException { } }

Fix:
Util . log ( e , "JavaBuilder<seq2seq4repair_space>logging<seq2seq4repair_space>CompilationParticipant's<seq2seq4repair_space>CoreException<seq2seq4repair_space>to<seq2seq4repair_space>help<seq2seq4repair_space>debugging" ) ;